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參數(shù)資料
| 型號(hào)： | ADSP-21262SKBCZ200 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 數(shù)字信號(hào)處理 |
| 英文描述： | SHARC Processor |
| 中文描述： | 16-BIT, 66.67 MHz, OTHER DSP, PBGA136 |
| 封裝： | LEAD FREE, MO-205AE, BGA-136 |
| 文件頁數(shù)： | 37/44頁 |
| 文件大?。?/td> | 1295K |
| 代理商： | ADSP-21262SKBCZ200 |
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ADSP-21262
Rev. A
|
Page 37 of 44
|
May 2004
OUTPUT DRIVE CURRENTS
Figure 28
shows typical I-V characteristics for the output driv-
ers of the ADSP-21262. The curves represent the current drive
capability of the output drivers as a function of output voltage.
TEST CONDITIONS
The ac signal specifications (timing parameters) appear in
Table 10 on Page 19
through
Table 31 on Page 36
. These include
output disable time, output enable time, and capacitive loading.
Timing is measured on signals when they cross the 1.5 V level as
described in
Figure 30
. All delays (in nanoseconds) are mea-
sured between the point that the first signal reaches 1.5 V and
the point that the second signal reaches 1.5 V.
CAPACITIVE LOADING
Output delays and holds are based on standard capacitive loads:
30 pF on all pins (see
Figure 29
).
Figure 33
shows graphically
how output delays and holds vary with load capacitance. The
graphs of
Figure 31
,
Figure 32
, and
Figure 33
may not be linear
outside the ranges shown for Typical Output Delay vs. Load
Capacitance and Typical Output Rise Time (20% – 80%, V =
Min) vs. Load Capacitance.
Figure 28. ADSP-21262 Typical Drive
Figure 29. Equivalent Device Loading for AC Measurements
(Includes All Fixtures)
Figure 30. Voltage Reference Levels for AC Measurements
SWEEP (VDDEXT) VOLTAGE (V)
-20
0
3.5
0.5
1
1.5
2
2.5
3
0
-40
-30
20
40
-10
S
VOL
3.11V, 70° C
3.3V, 25° C
3.47V, 0° C
VOH
30
10
3.11V, 70° C
3.3V, 25° C
3.47V, 0° C
1.5V
30pF
TO
OUTPUT
PIN
50
INPUT
OR
OUTPUT
1.5V
1.5V
Figure 31. Typical Output Rise/Fall Time
(20%-80%, V
DDEXT
= Max)
Figure 32. Typical Output Rise/Fall Time
(20%-80%, V
DDEXT
= Min)
LOAD CAPACITANCE (pF)
8.0
0
0
120
40
100
12.0
4.0
2.0
10.0
6.0
R
y = 0.0904x + 1.9426
y = 0.0722x + 1.4042
80
60
20
RISE
FALL
LOAD CAPACITANCE (pF)
12
0
120
20
40
60
80
100
10
8
6
4
R
2
0
y = 0.0915x + 2.2207
y = 0.0728x +1.6336
RISE
FALL
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| ADSP-21262SKBCZ200 | 制造商:Analog Devices 功能描述:DIGITAL SIGNAL PROCESSOR IC |
| ADSP21262SKBCZ200R | 功能描述:IC DSP CTLR 32BIT 136CSPBGA RoHS:是 類別:集成電路 (IC) >> 嵌入式 - DSP（數(shù)字式信號(hào)處理器） 系列:SHARC® 標(biāo)準(zhǔn)包裝:2 系列:StarCore 類型:SC140 內(nèi)核 接口:DSI，以太網(wǎng)，RS-232 時(shí)鐘速率:400MHz 非易失內(nèi)存:外部 芯片上RAM:1.436MB 電壓 - 輸入/輸出:3.30V 電壓 - 核心:1.20V 工作溫度:-40°C ~ 105°C 安裝類型:表面貼裝 封裝/外殼:431-BFBGA，F(xiàn)CBGA 供應(yīng)商設(shè)備封裝:431-FCPBGA（20x20） 包裝:托盤 |
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